Flow generator



FIG. 1 is a rear perspective view showing a first embodiment of our new design;

FIG. 2 is a rear perspective view showing a second embodiment of our new design;

FIG. 3 is a front perspective view showing the first embodiment of our new design;

FIG. 4 is a rear perspective view thereof;

FIG. 5 is a plan view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a right side view thereof;

FIG. 8 is a left side view thereof;

FIG. 9 is a rear view thereof;

FIG. 10 is an inverted plan view thereof;

FIG. 11 is a front perspective view of the second embodiment of our new design

FIG. 12 is a rear perspective view thereof;

FIG. 13 is a plan view thereof;

FIG. 14 is a front view thereof;

FIG. 15 is a right side view thereof;

FIG. 16 is a left side view thereof;

FIG. 17 is a rear view thereof; and,

FIG. 18 is an inverted plan view thereof. 

The ornamental design for a “flow generator”, as shown and described. 